diff --git a/include/pocketpy/common/utils.h b/include/pocketpy/common/utils.h
index acea6317..b4a158e0 100644
--- a/include/pocketpy/common/utils.h
+++ b/include/pocketpy/common/utils.h
@@ -51,6 +51,6 @@ typedef struct RefCounted {
 // static assert
 #ifndef __cplusplus
     #ifndef static_assert
-        #define static_assert(x, msg) if(!(x)) c11__abort(msg)
+        #define static_assert(x, msg) if(!(x)) c11__abort("static_assert failed: %s", msg)
     #endif
 #endif